Young modulus tester and measuring method thereof

Abstract

The Young modulus tester comprises a base (1), supporting plates (2) are arranged on the two sides of the upper portion of the base (1), a transverse plate (3) is arranged on the upper portions of the supporting plates (2), a cylinder (4) is arranged on the transverse plate (3), and the lower end of the cylinder (4) is connected with a metal wire (5); a motor support (6) is arranged on the side portion of the supporting plate (2) on one side, an adjusting motor (7) is fixed to the motor support (6), a driving gear (8) is arranged at the extending end of the adjusting motor (7), a device plate (20) is arranged between the supporting plates (2), and an optical lever adjusting mechanism (21) is arranged on the device plate (20). The experiment accuracy can be effectively improved, the experiment efficiency is improved, and meanwhile the experiment safety is guaranteed.

Description

technical field [0001] The invention relates to the field of Young's modulus measuring devices, in particular to a Young's modulus measuring instrument and a measuring method thereof. Background technique [0002] Young's modulus is an important parameter of engineering materials, a physical quantity that describes the rigidity of materials. Today, Young's modulus can be measured by a variety of methods, such as: static tensile method, dynamic resonance method, beam bending method, and ultrasonic measurement method. The existing experimental device for measuring Young's modulus using the static tensile method is mainly composed of two parts: a measuring instrument and a telescope. The tensile force received causes the wire to move up and down, resulting in a small amount of elongation. However, this type of device has the following shortcomings: 1. During the experiment, students need to increase or decrease the number of weights to make the wire move up and down. During t...

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Problems solved by technology

But this type of device has the following disadvantages: 1. During the experiment, students need to increase or decrease the number of weights so that the metal wire moves up and down. In the process of increasing or decreasing the weights, if the students accidentally drop the weights, it will cause safety problems. 2. Students may touch other parts of the measuring instrument during the process of adding or subtracting weights, such as the metal wire hanging the weight plate, the weight plate, etc. , will cause the measuring instrument, metal wire, etc. to vibrate obviously, and it will take time to wait for it to stand still, which will reduce the experimental efficiency and increase the error of the experimental data

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